<!DOCTYPE html>
<html lang="en">
    <head>
        <title></title>
        <meta charset="UTF-8">
        <meta name="viewport" content="width=device-width, initial-scale=1">
        <script src="./vue2.js"></script>
    </head>
    <body>
        <div id="app">
                <div v-pre>{{ this will not be compiled }}
                        <span >{{ this will not be compiled }}</span>
                </div>
            {{msg}}
        </div>
        <script>
            var vm = new Vue({
                el: '#app',
                data: {
                    msg:"hello  world"
                }
            })
        </script>
    </body>
</html>